Add external_glibmm module

external/CMakeLists.txt

@@ -26,6 +26,7 @@ endif()
 add_checked_subdirectory(ffmpeg)
 if (LINUX)
     add_checked_subdirectory(glib)
+    add_checked_subdirectory(glibmm)
 endif()
 add_checked_subdirectory(gsl)
 if (LINUX AND NOT DESKTOP_APP_DISABLE_DBUS_INTEGRATION)

external/glibmm/CMakeLists.txt

@@ -0,0 +1,40 @@
+# This file is part of Desktop App Toolkit,
+# a set of libraries for developing nice desktop applications.
+#
+# For license and copyright information please follow this link:
+# https://github.com/desktop-app/legal/blob/master/LEGAL
+
+add_library(external_glibmm INTERFACE IMPORTED GLOBAL)
+add_library(desktop-app::external_glibmm ALIAS external_glibmm)
+
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GLIBMM REQUIRED IMPORTED_TARGET glibmm-2.4)
+pkg_check_modules(GIOMM REQUIRED IMPORTED_TARGET giomm-2.4)
+
+if (DESKTOP_APP_USE_PACKAGED)
+    target_link_libraries(external_glibmm
+    INTERFACE
+        PkgConfig::GIOMM
+        PkgConfig::GLIBMM
+    )
+else()
+    target_include_directories(external_glibmm
+    INTERFACE
+        ${GIOMM_INCLUDE_DIRS}
+        ${GLIBMM_INCLUDE_DIRS}
+    )
+
+    target_link_static_libraries(external_glibmm
+    INTERFACE
+        giomm-2.4
+        glibmm-2.4
+        sigc-2.0
+    )
+
+    target_link_libraries(external_glibmm
+    INTERFACE
+        gio-2.0
+        gobject-2.0
+        glib-2.0
+    )
+endif()